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RDS demodulator with integrated filter

RDS demodulator with integrated filter
The RDS (Radio Data System) demodulator described in the May 1989 issue is based on the SAF7579T, and has an external 4-section 57-kHz bandpass filter ahead of it that is not easy to adjust. A follow-up type of the SAF7559T, the SAA6579T, has an on-chip pre-aligned RDS filter, which eliminates any adjustment.
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